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a reflecting telescope; f indicates the focus
A telescope in which light from the object is gathered and focused by a concave mirror, with the resulting image magnified by the eyepiece.
(Astronomy) a type of telescope in which the initial image is formed by a concave mirror. Also called: reflector Compare refracting telescope
n., adj., v. -scoped, -scop•ing. n.
1. an optical instrument for making distant objects appear larger and nearer when viewed directly through lenses (refracting telescope) or indirectly as through images focused by a concave mirror (reflecting telescope).adj.
2. consisting of parts that slide one within another.v.t.
3. to force together, one into another, in the manner of the sliding tubes of a jointed telescope.
4. to shorten or condense.v.i.
5. to slide together in the manner of the tubes of a telescope.
6. to be driven one into another, as railroad cars in a collision.
7. to become condensed.
[1640–50; < New Latin telescopium or Italian telescopio]
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|Noun||1.||reflecting telescope - optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece; "Isaac Newton invented the reflecting telescope in 1668"|
Cassegrainian telescope, Gregorian telescope - a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror
coude system, coude telescope - a reflecting telescope so constructed that the light is led to a plate holder or spectrograph
Herschelian telescope, off-axis reflector - a reflecting telescope with the mirror slightly tilted to throw the image to the side where it can be viewed
Maksutov telescope - reflecting telescope in which the aberration of the concave mirror is reduced by a meniscus lens
Newtonian reflector, Newtonian telescope - reflecting telescope in which the image is viewed through an eyepiece perpendicular to main axis
optical telescope - an astronomical telescope designed to collect and record light from cosmic sources
parabolic mirror - a parabolic reflector for light radiation
n → Spiegelteleskop nt